INTEGUMENT. Surface Anatomy. Palpation Bony landmarks Dermatomes Neural assessment. Integument Histology. Epidermis: Stratified squamous epithelium Resting on: Basement membrane Resting on: Dermis: Dense irregular connective tissue. Epidermis.
Stratified squamous epithelium
Dense irregular connective tissue
Area of high mitotic activity.
The cells in this layer are dead and keratinized.
Decrease with age.
Vellus represents 95% of the hair coverage in males.
Vellus represents 35% of the hair coverage in females.
Made up of dead cornified epidermal cells.
Derived from both epidermis and dermis.
Scalp hair = 2-3 years
Eyebrow hair = 3-4 months
Modified stratum corneum
Avascular and not innervated
Travels over a nail bed guided by lateral nail grooves
Stratum germinativum produces ungis
Passed off to keratinocytes (cells of epidermis).
Phagocytized by keratinocytes.
Incisions normally made parallel to Langer’s lines